9(a-b)²+12(a²-b²)+4(a+b)²因式分解结果

问题描述:

9(a-b)²+12(a²-b²)+4(a+b)²因式分解结果

9(a-b)²+12(a²-b²)+4(a+b)²因式分解结果
= (3a-3b+2a+2b)²
= ( 5a-b)²

9(a-b)²+12(a²-b²)+4(a+b)²
=[3(a-b)+2(a+b)]²
=(5a-b)²

[3(a-b)-2(a+b)]2 小伙子,基础有待加强啊~

原式=9(a-b)²+12(a+b)(a-b)+4(a+b)²
=[3(a-b)+2(a+b)]²
=(5a-b)²